WO2011141144A1 - Garniture de friction pour transfert de couple - Google Patents

Garniture de friction pour transfert de couple Download PDF

Info

Publication number
WO2011141144A1
WO2011141144A1 PCT/EP2011/002271 EP2011002271W WO2011141144A1 WO 2011141144 A1 WO2011141144 A1 WO 2011141144A1 EP 2011002271 W EP2011002271 W EP 2011002271W WO 2011141144 A1 WO2011141144 A1 WO 2011141144A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
friction lining
binder
friction
fillers
Prior art date
Application number
PCT/EP2011/002271
Other languages
German (de)
English (en)
Inventor
Michael Bergheim
Jan-Mar Michel
Original Assignee
Hoerbiger Antriebstechnik Holding Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoerbiger Antriebstechnik Holding Gmbh filed Critical Hoerbiger Antriebstechnik Holding Gmbh
Priority to EP11719477.9A priority Critical patent/EP2569553B1/fr
Priority to CN201180023408.5A priority patent/CN103026092B/zh
Publication of WO2011141144A1 publication Critical patent/WO2011141144A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Composition of linings ; Methods of manufacturing
    • F16D69/025—Compositions based on an organic binder
    • F16D69/026—Compositions based on an organic binder containing fibres

Definitions

  • the invention relates to a friction lining for torque transmission.
  • the invention further relates to a method for producing such a friction lining.
  • Such a friction lining can be used in particular for synchronizer rings of transmissions, clutch plates and brake discs. All applications have in common that the friction lining should have low wear and a constant high coefficient of friction over the entire life. In addition, the friction lining should be able to be produced at a low total cost.
  • friction paper This material, also referred to as “friction paper”, is supplied in the form of sheets as a result of the manufacturing process, and the individual friction lining segments are then cut out of the friction paper sheets and applied to the carrier, for example adhesively bonded the manufacturing cost of friction paper comparatively high.
  • the object of the invention is to provide a friction lining, which can be produced inexpensively and is characterized by a good quality. Furthermore, it is an object of the invention to provide a method for producing such a friction lining.
  • a friction lining for torque transmission is provided according to the invention, with a substrate, a binder and friction active fillers, wherein the binder has completely impregnated the substrate and the fillers are deposited on the substrate so that smaller filler particles propagated on the surface of the substrate are located and partially penetrated into the substrate.
  • This friction lining is characterized by a high stability and at the same time sufficient flexibility. The stability results from the complete impregnation of the substrate, which ensures a good bond between the substrate and the fillers.
  • the friction behavior of the friction lining can be adapted to the respective requirements.
  • the substrate is selected from the group of the following materials: aramid felt; Polyaramids, especially para and meta substituted, Twaron, Dupont, Nomex; Kynol and melamine resin fibers such as basofil; thermoplastic fibers; inorganic fibers such as glass fibers and mineral fibers. It can be seen that due to the simple structure of the friction lining, many different materials can be used as a substrate. According to one embodiment of the invention it is provided that the substrate has an open-pore, filter-like surface structure and in particular has an average pore size which is smaller than 90 [im. This ensures that the larger of the filler particles remain on the surface of the substrate and are not introduced into this.
  • the friction active fillers are selected from the group of the following materials: coke, graphite, hard materials, inorganic fillers such as mica, quartz, titanates, clays and kieselguhr, solid lubricants, short fibers such as carbon, glass, aramid , Basalt fiber.
  • coke coke
  • graphite hard materials
  • inorganic fillers such as mica, quartz, titanates, clays and kieselguhr
  • solid lubricants such as carbon, glass, aramid , Basalt fiber.
  • short fibers such as carbon, glass, aramid , Basalt fiber.
  • the fibers are used as the filler, they preferably have an average length of between 50 and 350 ⁇ m. This has an advantageous effect on the wear behavior.
  • the friction active fillers it has been found to be advantageous if they have a particle size in the range of 2 to 800 ⁇ . According to a preferred embodiment, it is provided that the friction-active fillers predominantly belong to two different groups of particle sizes. With the larger particles, the structure of the friction lining can be adjusted in the desired manner, while the friction properties can be set in the desired manner with the smaller particles.
  • the particles of the first group have a particle size in the range of 2 to 50 pm and the particles of the second group have a particle size in the range of 90 to 800 pm. These values have proven to be advantageous. In particular, it is possible in this way to ensure that the coefficient of friction remains constant under changing lubricant temperatures, in particular in the case of falling temperatures of the lubricant, the coefficient of friction ⁇ 1 does not drop.
  • the binder is preferably selected from the group of the following materials: fluororubbers, NBR, X-NBR and corresponding latices, and resins from the groups of phenolic resins, especially resoles, novolacs, melamine resins, epoxy resins, cyanoacrylates and maleic / bismaleimide and amide resins.
  • a method for producing a friction lining for torque transmission comprises the following steps: First, a substrate is provided which is porous. A mixture of a binder and friction-active fillers in a predetermined layer thickness is applied to the substrate in a single step. Subsequently, the binder is cured.
  • This method is based on the recognition that it is possible to apply in one single step the binder with all fillers to the substrate, which has an open-pore, filter-like surface structure, without having to compromise on the quality of the friction lining. Due to the small number of process steps, the process is particularly cost-effective.
  • the mixture is scrape.
  • This procedure is technically easy to master; the mixture of binder and fillers is applied continuously to the substrate and by means of a squeegee to the desired thickness brought. In this way, tight tolerances can be maintained with regard to the thickness of the layer applied to the substrate.
  • the mixture is applied solely by means of a nozzle. This also makes it possible in a technically simple manner to apply the mixture of binder and fillers continuously and with high distribution accuracy to the substrate.
  • the binder is first brought into a B state after application of the mixture to the substrate. This ensures that the mixture applied to the substrate has the necessary strength before it is further processed.
  • the coated substrate is bonded by hot pressing to a carrier provided for the application.
  • the binder used is converted into the C-state.
  • the hot pressing can also recalibrate the thickness of the coated substrate.
  • FIG. 1 shows schematically the application of a mixture of binder and fillers on a substrate by means of a doctor blade;
  • FIG. 2 on an enlarged scale the detail II of Figure;
  • FIG. 3 is a perspective view showing the application of a mixture of binder and fillers to a substrate by means of a slot die which may alternatively be used to apply the mixture to the substrate.
  • FIG. 1 shows a substrate 10, which may be a web of aramid felt. This is coated with a mixture 12 of fillers, for example coke particles, and a binder 22, for example a one-stage resole resin.
  • the substrate is moved relative to a metering device 14 (for example, on a substrate 8 shown in FIG. 2), which continuously applies the mixture 12 to the surface of the substrate 0.
  • a doctor blade 16 At a distance from the metering device 14 is a doctor blade 16 at a predetermined height above the substrate 10 so that the mixture 12 (and thus the substrate with the mixture applied thereon) downstream of the doctor blade 16 has a predetermined thickness.
  • the fillers in this embodiment consist of coke particles, which can be predominantly assigned to one of two groups of particle sizes: small particles 18 with particle sizes in the range of 2 to 50 ⁇ m, and large particles 20 with particle sizes in the range of 90 to 800 ⁇ m. This is shown in detail in FIG. 2, where thick dots symbolize the small particles 18 and circles the large particles 20.
  • the binder 22 is shown in the form of small dots.
  • the substrate acts like a filter which absorbs the binder and thereby also a portion of the small particles 18 in themselves "which sucks".
  • the large particles 20 "remain" on the surface of the substrate, resulting in a substrate impregnated with the binder, on which the fillers wetted with the binder have settled
  • the moving speed of the substrate and the distance between the metering device 14 and the doctor blade 16 are dimensioned so that the binder 22 has completely impregnated the substrate 10 when it reaches the doctor blade
  • the friction lining in the intermediate state downstream of the doctor blade 16 consists of a substrate 10 which is completely (ie as far as on the Base 8 resting side) is impregnated with the binder 22.
  • the coated substrate is dried or brought to the B state.
  • the friction lining is now in the form of large webs and can be further processed. From these tracks, a friction lining segment can then be cut out in the respectively required size and applied to a carrier, for example to a synchronizer ring or a lamella.
  • a carrier for example to a synchronizer ring or a lamella.
  • an adhesive layer can also be applied. The bonding is usually carried out by hot pressing, wherein the binder cures completely.
  • a slot nozzle 30 can also be used in order to apply the mixture 12 of binder and fillers continuously and homogeneously to the substrate 10.
  • the mixture is fed in the middle and distributed evenly in the slot nozzle, so that it is applied uniformly over the width of the substrate web.
  • it is necessary to match the geometry of the slot nozzle 30 to the composition, in particular the particle sizes, and to the viscosity of the mixture.
  • a major advantage of the method described is that the back of the substrate is not contaminated with filler particles. This reduces undesirable changes in the thickness of the friction lining.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

L'invention concerne une garniture de friction pour le transfert de couple, comprenant un substrat (10), un liant (22) et des charges de friction actives (18, 20). Le liant (22) imbibe complètement le substrat (10) et les charges (18, 20) se déposent sur le substrat (10) de telle sorte que les plus petites particules de charges (18) s'accumulent à la surface du substrat (10) et pénètrent en partie dans le substrat (10). L'invention concerne aussi un procédé pour la fabrication d'une garniture de friction pour le transfert de couple, comprenant les étapes suivantes : tout d'abord, on fournit un substrat poreux (10). Ensuite, on applique sur le substrat (10), en une seule étape, un mélange (12) d'un liant (22) et de charges de friction actives (18, 20) suivant une épaisseur de couche prédéterminée. Finalement, le liant (22) est durci.
PCT/EP2011/002271 2010-05-10 2011-05-06 Garniture de friction pour transfert de couple WO2011141144A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11719477.9A EP2569553B1 (fr) 2010-05-10 2011-05-06 Garniture de friction pour transfert de couple
CN201180023408.5A CN103026092B (zh) 2010-05-10 2011-05-06 用于传递转矩的摩擦衬片和用于制造这种摩擦衬片的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010020001.8 2010-05-10
DE102010020001.8A DE102010020001B4 (de) 2010-05-10 2010-05-10 Verfahren zur Herstellung eines Reibbelags zur Drehmomentübertragung

Publications (1)

Publication Number Publication Date
WO2011141144A1 true WO2011141144A1 (fr) 2011-11-17

Family

ID=44118756

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/002271 WO2011141144A1 (fr) 2010-05-10 2011-05-06 Garniture de friction pour transfert de couple

Country Status (4)

Country Link
EP (1) EP2569553B1 (fr)
CN (1) CN103026092B (fr)
DE (1) DE102010020001B4 (fr)
WO (1) WO2011141144A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018122564A1 (fr) * 2016-12-30 2018-07-05 Paata Gogoladze Procédé de fabrication de fibre textile de basalte pour fabriquer un matériau de plaquette de frein

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015220169A1 (de) * 2015-10-16 2017-04-20 Bayerische Motoren Werke Aktiengesellschaft Folie zur Reibungserhöhung zwischen zwei kraftschlüssig verbundenen Bauteilen
AT522443B1 (de) * 2019-10-09 2020-11-15 Zeroplast Sp Z O O Formkörper

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639392A (en) 1985-10-28 1987-01-27 General Motors Corporation Clutch plate member having layer of high durability, self-conforming friction facing
EP1396655A1 (fr) * 2002-09-04 2004-03-10 BorgWarner Inc. Materiau de friction avec couche modificatrice de friction
US20050281971A1 (en) * 2004-06-18 2005-12-22 Lam Robert C Fully fibrous structure friction material
WO2009055371A2 (fr) * 2007-10-25 2009-04-30 Borgwarner Inc. Matériau de friction recouvert de particules et saturé par une résine élastique
JP2010090336A (ja) * 2008-10-10 2010-04-22 Toyota Motor Corp 摩擦材及び摩擦材の製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6001750A (en) 1993-08-04 1999-12-14 Borg-Warner Automotive, Inc. Fibrous lining material comprising a primary layer having less fibrillated aramid fibers, carbon fibers, carbon particles and a secondary layer comprising carbon particles
AT401255B (de) 1994-02-25 1996-07-25 Hoerbiger & Co Reibbelag
CA2249621A1 (fr) 1996-04-08 1997-10-16 Karl T. Mckeague Materiaux de frottement a surface a motif, elements de plaques d'embrayage et leurs procedes de fabrication et d'utilisation
US6630416B1 (en) 2000-11-06 2003-10-07 Borgwarner Inc. Friction material formed by deposition of friction modifiers on high, wet energy carbonaceous friction materials
US7294388B2 (en) * 2002-08-13 2007-11-13 Borgwarner Inc. Friction material with nanoparticles of friction modifying layer
US20050064778A1 (en) 2003-09-19 2005-03-24 Lam Robert C. High coefficient friction material with symmetrical friction modifying particles
JP5073152B2 (ja) 2003-10-15 2012-11-14 Ｎｓｋワーナー株式会社 湿式摩擦材及びその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639392A (en) 1985-10-28 1987-01-27 General Motors Corporation Clutch plate member having layer of high durability, self-conforming friction facing
EP1396655A1 (fr) * 2002-09-04 2004-03-10 BorgWarner Inc. Materiau de friction avec couche modificatrice de friction
US20050281971A1 (en) * 2004-06-18 2005-12-22 Lam Robert C Fully fibrous structure friction material
WO2009055371A2 (fr) * 2007-10-25 2009-04-30 Borgwarner Inc. Matériau de friction recouvert de particules et saturé par une résine élastique
JP2010090336A (ja) * 2008-10-10 2010-04-22 Toyota Motor Corp 摩擦材及び摩擦材の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018122564A1 (fr) * 2016-12-30 2018-07-05 Paata Gogoladze Procédé de fabrication de fibre textile de basalte pour fabriquer un matériau de plaquette de frein

Also Published As

Publication number Publication date
DE102010020001A1 (de) 2011-11-10
EP2569553B1 (fr) 2018-05-02
CN103026092A (zh) 2013-04-03
DE102010020001B4 (de) 2022-01-20
CN103026092B (zh) 2016-04-13
EP2569553A1 (fr) 2013-03-20

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